Home / Civil Engineering / Irrigation :: Section 1

Civil Engineering :: Irrigation

  1.  

    According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase

  2. A.

    rate of flood wave

    B.

    water surface elevation during floods

    C.

    maximum discharge

    D.
    velocity and scouring action
    E.

    surface slope of streams above the leveed portion

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. In a canal syphon, the flow is

  4. A.

    under atmospheric pressure

    B.

    pipe flow

    C.

    with critical velocity

    D.

    under negative pressure.

    View Answer

    Workspace

    Discuss Discuss in Forum


  5.  

    A water-logged land is found suitable for cultivation due to

  6. A.

    ease of tillage for preparation of the field for optimum condition of germination

    B.

    absence of aeration of soil from root zone of the plant

    C.

    regular supply of water to plants from the water table by capillary action

    D.

    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. When a canal and a drainage approach each other at the same level, the structure so provided, is

  8. A.

    an aqueduct

    B.

    a syphon

    C.

    a level crossing

    D.

    inlet and outlet.

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. For smooth entry of water in a canal, the angle between head regulator and water is generally kept

  10. A.

    80°

    B.

    90°

    C.

    110°

    D.

    120°

    View Answer

    Workspace

    Discuss Discuss in Forum


  11.  

    If L is total length of a canal in kilometres, P is total perimeter of its lining in metres and C is the cost of lining per square metre, the additional expenditure involved on lining, is

  12. A.

    1000 PLC

    B.

    \( \frac { PLC } { 1000} \)

    C.

    \( \frac { PLC } { 1000 C} \)

    D.

    \(\frac { PC} { 100L} \)


  13. Pick up the incorrect statement from the following:

  14. A.

    In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area

    B.

    In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn

    C.

    In furrow irrigation water is admitted between the rows of plants in the field

    D.

    None of these.


  15. Fundamental momentum equation for a hydraulic jump, is

  16. A.

    \( D1^2-D1^2 = \frac { 2q } { g } (v1-v2)\)

    B.

    \( D2^2-D1^2 = \frac { 2q } { g } (v-v2)\)

    C.

    \( D1^2-D2^2 = \frac { 2q } { g } (v2-v1)\)

    D.

    \( D1^2+D2^2 = \frac { 2q } { g } (v2-v1)\)


  17. In a Sarda type fall, the rectangular crest, may be used for discharge upto

  18. A.

    6 cumecs

    B.

    10 cumecs

    C.

    14 cumecs

    D.

    20 cumecs

    E.

    25 cumecs.


  19. When a canal is carried over a natural drainage, the structure provided, is known as

  20. A.

    syphon

    B.

    aqueduct

    C.

    super passage

    D.

    syphon-aqueduct.